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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-04-11 14:56:49 +0400
committerJens Axboe <jens.axboe@oracle.com>2008-04-21 11:50:08 +0400
commitc5dec1c3034f1ae3503efbf641ff3b0273b64797 (patch)
treed8c2d81ff2d944a0ba43e6ef7284482898af8b3b /include/linux/bio.h
parent476a4813cfddf7cf159956cc0e2d3c830c1507e3 (diff)
downloadlinux-c5dec1c3034f1ae3503efbf641ff3b0273b64797.tar.xz
block: convert bio_copy_user to bio_copy_user_iov
This patch enables bio_copy_user to take struct sg_iovec (renamed bio_copy_user_iov). bio_copy_user uses bio_copy_user_iov internally as bio_map_user uses bio_map_user_iov. The major changes are: - adds sg_iovec array to struct bio_map_data - adds __bio_copy_iov that copy data between bio and sg_iovec. bio_copy_user_iov and bio_uncopy_user use it. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Tejun Heo <htejun@gmail.com> Cc: Mike Christie <michaelc@cs.wisc.edu> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/bio.h')
-rw-r--r--include/linux/bio.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 4c59bdccd3ee..d259690863fb 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -327,6 +327,8 @@ extern struct bio *bio_map_kern(struct request_queue *, void *, unsigned int,
extern void bio_set_pages_dirty(struct bio *bio);
extern void bio_check_pages_dirty(struct bio *bio);
extern struct bio *bio_copy_user(struct request_queue *, unsigned long, unsigned int, int);
+extern struct bio *bio_copy_user_iov(struct request_queue *, struct sg_iovec *,
+ int, int);
extern int bio_uncopy_user(struct bio *);
void zero_fill_bio(struct bio *bio);